Join Date: Feb 2004
Location: Vancouver, BC, Canada
As others have pointed out, there's no significant "power band" on these cars. Actually, it's the wrong way to use the term; power band is a term describing the torque curve over the entire operational rpm range of an engine. i.e. you can say: a power band is wide, narrow, or peaky.
On the 3.5 HO, the torque curve is generally pretty flat up till 2700 rpm, then there's a dip from 2800 - 3400, where the torque drops and the car feels flat. At 3500 rpm, an increase in torque occurs, and sustains up to around 4800. Around 4800, the SRV kicks in and causes a momentary dip in torque, that'll be later made up past 5500 rpm (versus no SRV). The engine continues pulling, in a lackluster fashion, up till around 6400 rpm. The pull won't be anywhere close to 3500 - 4800.
It's not a bad engine, but outdated technology by modern standards. A 3.6 Pentastar, 3.6 GM direct injection, or 3.7 Ford, would have a much more desireable power band. They have strong torque right off idle, and hold it all the way to near redline. No dips and hicupps in the middle. I often dream about a Pentastar and 6 spd in my Trep before the alarm clock rings...
2003 Police Package
2006 C6 Z06 (traitor)
2014 Ram HEMI 8 spd
It takes a Mopar to catch a Mopar